Short answers, pulled from the story.
Murshid Quli Khan shifted the capital of Bengal from Dhaka to the place that became known as Murshidabad in the early 1700s. The Mughal Emperor Farrukhsiyar promoted him to the status of a princely Nawab which allowed Khan to create a new dynasty within the Mughal aristocracy.
Siraj-ud-Daulah lost his final battle against British forces in 1757 and was betrayed by his commander Mir Jafar who received support from the French. The British installed Mir Jafar's family as a puppet dynasty over the region and eventually reduced the Nawab to the status of a landlord known as zamindar.
Warren Hastings removed the supreme civil and criminal courts to Calcutta in 1772. These courts were brought back to Murshidabad again three years later in 1775 before Lord Cornwallis moved the entire revenue and judicial staffs to Calcutta in 1790.
As of 2011 Indian Census data, Murshidabad had a total population of 44,019 residents with twenty-two thousand one hundred seventy-seven males and twenty-one thousand eight hundred forty-two females. Four thousand four hundred fourteen children fell within the age group from zero to six years old while three thousand two hundred forty-five individuals counted as literate among the total population.
Hindus made up 75.09 percent of the religious makeup recorded that year while Muslims comprised 23.86 percent of the population with others accounting for 1.05 percent. Scheduled Castes numbered thirteen thousand seven hundred sixty-two people in the area and three hundred two members belonged to Scheduled Tribes according to the same count.